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Superconducting Qubits Quantum Simulation

Tunable Chiral Bound States with Giant Atoms

arXiv
Authors: Xin Wang, Tao Liu, Anton Frisk Kockum, Hong-Rong Li, Franco Nori

Year

2020

Paper ID

21093

Status

Preprint

Abstract Read

~2 min

Abstract Words

115

Citations

N/A

Abstract

We propose tunable chiral bound states in a system composed of superconducting giant atoms and a Josephson photonic-crystal waveguide (PCW), with no analog in other quantum setups. The chiral bound states arise due to interference in the nonlocal coupling of a giant atom to multiple points of the waveguide. The chirality can be tuned by changing either the atom-waveguide coupling or the external bias of the PCW. Furthermore, the chiral bound states can induce directional dipole-dipole interactions between multiple giant atoms coupling to the same waveguide. Our proposal is ready to be implemented in experiments with superconducting circuits, where it can be used as a tunable toolbox to realize topological phase transitions and quantum simulations.

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  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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  • We propose tunable chiral bound states in a system composed of superconducting giant atoms and a Josephson photonic-crystal waveguide (PCW), with no analog in other quantum setups.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2008.13560 [2] arXiv https://arxiv.org/abs/2008.13560 [3] Publisher https://arxiv.org/abs/2008.13560

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